[tor-bugs] #29962 [Core Tor/Tor]: Turn off Travis Rust caching, and see if it speeds up the builds

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#29962: Turn off Travis Rust caching, and see if it speeds up the builds
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 Reporter:  teor          |          Owner:  (none)
     Type:  defect        |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: unspecified
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  tor-ci-speed  |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Changes (by rl1987):

 * status:  new => needs_review


Comment:

 I tried following advice on [0]. It seems that it does speed up Rust-
 enabled builds by few minutes.

 See:
 * https://travis-ci.org/rl1987/tor/builds/513758077
 * https://travis-ci.org/rl1987/tor/builds/513764216
 Reference master build:
 * https://travis-ci.org/rl1987/tor/builds/513415347

 See: https://github.com/torproject/tor/pull/876

 [0] https://levans.fr/rust_travis_cache.html

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29962#comment:1>
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